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permit SPIFFS_write() on NULL buffer #111

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permit SPIFFS_write() on NULL buffer #111

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4 changes: 2 additions & 2 deletions src/spiffs_nucleus.c
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Original file line number Diff line number Diff line change
Expand Up @@ -749,7 +749,7 @@ s32_t spiffs_populate_ix_map(spiffs *fs, spiffs_fd *fd, u32_t vec_entry_start, u
#if !SPIFFS_READ_ONLY
// Allocates a free defined page with given obj_id
// Occupies object lookup entry and page
// data may be NULL; where only page header is stored, len and page_offs is ignored
// len may be 0; where only page header is stored, data and page_offs is ignored
s32_t spiffs_page_allocate_data(
spiffs *fs,
spiffs_obj_id obj_id,
Expand Down Expand Up @@ -781,7 +781,7 @@ s32_t spiffs_page_allocate_data(
SPIFFS_CHECK_RES(res);

// write page data
if (data) {
if (len) {
res = _spiffs_wr(fs, SPIFFS_OP_T_OBJ_DA | SPIFFS_OP_C_UPDT,
0,SPIFFS_OBJ_LOOKUP_ENTRY_TO_PADDR(fs, bix, entry) + sizeof(spiffs_page_header) + page_offs, len, data);
SPIFFS_CHECK_RES(res);
Expand Down